Hello Tom,
I looked into grants earlier this year and found that some grants are available to an existing business that meet specific criteria verses, very little (practicly none) for start up with the dollar amounts limited.

Hi Tom. By conducting an internet search AND by contacting the federal government agency directly (for example the former Department of Health and Human Services) you may either find what you're looking for, or at least be directed to the proper party (ies). Good luck as working with grants (particularly federal grants) can be very labor intensive.

I would contact the Small Business Administration in your area. And search things like "California Small Business Assitance", "Small Business support", "Small Business Programs", etc. There are a few gyms here now that got investors to help them start up.

I have start and restarted my business several times. I always got a back up job to help with the costs until things got going, if I hadn't saved up enough money before the restart (which was usually a relocation and restart) to give it a go without the back up job.